Sash-operating mechanism



(No Model.)

E. G. FLANAGAN. SASH OPERATING MECHANISM.

No. 544,428. Patented Aug. 13,1895.

WITNESSES UNITED STATES PATENT OFFICE.

EDWARD G. FLANAGAN, OF PITTSBURG, PENNSYLVANIA.

SASH-OPERATING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 544,428, dated August13, 1895.

Application filed September 6,1894. Serial No. 52 2,238- (No model.)

To all whom it may concern.-

Be it known that I, EDWARD G. FLANAGAN,

of Pittsburg, in the county of Allegheny and State of Pennsylvania, haveinvented a new and useful Improvement in Sash-0perating Mechanism, ofwhich the following is a full, clear, and exact description, referencebeing had to the accompanying drawings, forming part of thisspecification, in which-- Figure 1 is a front elevation of my improvedsash-operating device, and Fig. 2 is a vertical section of the same.

My invention relates to the operating of pivoted window-sashes, and isdesigned to afford a cheap and convenient device therefor, which shallat the same time strengthen and brace the sash against wind-pressures orother strains thereon.

To that end it consists in a segmental rack secured to the windowopposite to its, pivotal point, and a gear-wheel intermeshing with saidrack and operated through any suitable mechanism.

It also consists in the construction and arrangement of the parts, ashereinafter more fully described, and set forth in the claim.

In the drawings, 2 are the Window-sashes, pivoted at the point 3 andhaving a brace 4 secured to the side of each sash and extendingpreferably about one-third of the height of the sash. Integral with.this brace is a segmental rack 5, which intermeshes with a pinion 6 upona horizontal shaft 7, which extends along the windows opposite theirpivotal points.

I have shown a segmental rack and intermeshing pinion at each side ofthe sashes, but it is evident that only one may be used for each sash.At the end of the shaft 7 is a sprocket-wheel 8, connected by chain 9with a lower sprocket-wheel 10, operated by handwheel 11, by means ofwhich the windows may be swung to any desired angle.

The advantages of my invention will beapparent to those skilled in theart. Instead of swinging the window-sash by a rod or rack attached tothe upper or lower end thereof, in operating which against awind-pressure a heavy strain is brought upon the window, which willeventually bend the same, so that it will not seat perfectly, the poweris applied at the center and the strain equalized. Moreover, thesegmental rack itself helps to brace and stifien the sash, and theentire device is simple and not liable to get out of order.

Manyvariations in the form, construction, and arrangement of the partsmay be made without departing from my invention, since What I claim isThe combinationwith a pivoted windowsash, of a centrally located braceplate havinga segmental rack opposite the pivotal point of said window,a pinion engaging said rackat substantially the same level as the pivotand means for operating the pinion; substantially as described.

In testimony whereof I have hereunto set my hand.

E. G. FLANAGAN. Witnesses:

W. B. CORWIN, O. BYRNES.

